Megadestroyer uses melee attacks and a ground stomp that drops lava rocks. He will crouch down for a couple seconds before jumping up and landing on the ground, causing lava rocks to fall down on players. The attack has a long preparation time and the rocks don't hit immediately, making the attack easy to evade. Once it reaches 75% health it will hide in the lava and summon three Veteran Destroyer Crabs around the pool of lava. Once they are defeated, he will return. At 50% health it will hide in the lava again, this time summoning three Veteran Destroyer Harpies. Two Destroyer Crablings will occasionally spawn near him during the fight.